LM2576T-12/LB03 TI SIMPLE SWITCHER | TO-220-5 | 12V Output, 3A Step-Down

Product Overview

The LM2576T-12/LB03 from Texas Instruments is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator. It is capable of driving a 3A load with excellent line and load regulation. This device is available in a TO-220-5 package and offers a fixed output voltage of 12V. The LM2576 series is a SIMPLE SWITCHER® regulator, requiring a minimum number of external components for operation. It features internal frequency compensation, a fixed-frequency oscillator, and a shutdown pin for power savings.

Detailed Technical Specifications

Key Features

• 3A output current capability
• Fixed 12V output voltage
• Wide input voltage range: 4.75V to 40V
• 52 kHz fixed-frequency internal oscillator
• Shutdown pin for power savings (typical 80 µA standby current)
• Internal frequency compensation
• Thermal shutdown and current limit protection
• Requires only 4 external components
• High efficiency: up to 88%

Target Applications

The LM2576T-12/LB03 is ideal for a variety of applications requiring a regulated 12V supply from a higher voltage source. Specific examples include:

• 5G base station power supplies: providing stable 12V for RF amplifiers and digital processing units.
• Automotive dashboard systems: powering infotainment displays and control modules from a 24V battery system.
• Industrial control systems: supplying 12V to PLCs, sensors, and actuators.
• Telecommunications equipment: converting 48V backplane voltages to 12V for line cards.
• Battery-powered devices: efficiently stepping down battery voltage to 12V for portable instruments.

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for LM2576T-12/LB03. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• BOM Kitting & Sampling Services: Specialized sourcing for testing samples and urgent shortage components.

Quality Assurance & Compliance

Jasin Chip guarantees that all delivered products are 100% original factory stock with full quality assurance and traceability.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

LM2576T-12/LB03 是德州儀器（TI）推出的一款單片集成電路，提供降壓（buck）開關穩壓器所需的所有有源功能。它能夠驅動高達3A的負載，並具有出色的線性和負載調節能力。該器件採用TO-220-5封裝，提供固定的12V輸出電壓。LM2576系列是SIMPLE SWITCHER®穩壓器，只需最少的外部元件即可工作。它具備內部頻率補償、固定頻率振盪器和關斷引腳，以實現節能。

詳細技術參數

核心特性

• 3A 輸出電流能力
• 固定12V輸出電壓
• 寬輸入電壓範圍：4.75V 至 40V
• 52 kHz 固定頻率內部振盪器
• 關斷引腳實現節能（典型待機電流80 µA）
• 內部頻率補償
• 熱關斷和電流限制保護
• 僅需4個外部元件
• 高效率：高達88%

典型應用場景

LM2576T-12/LB03 適用於需要從較高電壓源獲得穩定12V電源的各種應用。具體實例包括：

• 5G基站電源：為射頻放大器和數字處理單元提供穩定的12V電源。
• 汽車儀表板系統：從24V電池系統為信息娛樂顯示屏和控制模塊供電。
• 工業控制系統：為PLC、傳感器和執行器提供12V電源。
• 電信設備：將48V背板電壓轉換為12V供線卡使用。
• 電池供電設備：高效地將電池電壓降壓至12V，用於便攜式儀器。

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 LM2576T-12/LB03 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 全天候環球客戶支援：專業團隊為您提供即時報價及技術支援，無需漫長等待。
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品質保證與合規

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• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
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HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
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